<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts';

require('echarts/theme/macarons'); // echarts theme
import resize from './mixins/resize';

export default {
    mixins: [resize],
    props: {
        className: {
            type: String,
            default: 'chart'
        },
        width: {
            type: String,
            default: '100%'
        },
        height: {
            type: String,
            default: '300px'
        },
        // 组件传值
        select_type: {
            type: String,
            default: ''
        },
        server_data: {
            type: Object,
            default: {}
        }
    },
    data() {
        return {
            chart: null,

            chart_legend: ['Industries', 'Technology', 'Forex', 'Gold', 'Forecasts'],
            chart_series: [
                { value: 320, name: 'Industries' },
                { value: 240, name: 'Technology' },
                { value: 149, name: 'Forex' },
                { value: 100, name: 'Gold' },
                { value: 59, name: 'Forecasts' }
            ]
        };
    },
    // 监听
    watch: {
    // 当 skill 属性的值发生改变时会执行下面的代码
        select_type: function(newValue, oldValue) {
            this.select_type = newValue;

            this.changeData();
        },
        // 当 skill 属性的值发生改变时会执行下面的代码
        server_data: function(newValue, oldValue) {
            this.server_data = newValue;

            this.changeData();
        }
    },
    mounted() {
    // this.$nextTick(() => {
    //     this.initChart();
    // });
    },
    beforeDestroy() {
        if (!this.chart) {
            return;
        }
        this.chart.dispose();
        this.chart = null;
    },
    methods: {
        changeData() {
            if (
            // 磁盘
                this.select_type == 'disk' ||
                    // 内存
                    this.select_type == 'memory'
            ) {

            }
            this.chart_legend = this.server_data[this.select_type] ? this.server_data[this.select_type].chart_legend : this.chart_legend;
            this.chart_series = this.server_data[this.select_type] ? this.server_data[this.select_type].chart_series : this.chart_series;

            this.initChart();
        },
        initChart() {
            this.chart = echarts.init(this.$el, 'macarons');

            this.chart.setOption({
                tooltip: {
                    trigger: 'item',
                    formatter: '{a} <br/>{b} : {c} ({d}%)'
                },
                legend: {
                    left: 'center',
                    bottom: '10',
                    data: this.chart_legend
                },
                series: [
                    {
                        name: 'WEEKLY WRITE ARTICLES',
                        type: 'pie',
                        // roseType: 'radius',
                        radius: [15, 95],
                        center: ['50%', '38%'],
                        data: this.chart_series,
                        animationEasing: 'cubicInOut',
                        animationDuration: 2600
                    }
                ]
            });
        }
    }
};
</script>
